/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package pt.utl.ist.isr.livetrack.ui;

import java.awt.Component;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import org.openide.WizardDescriptor;
import org.openide.util.HelpCtx;

public class NewServerWizardPanel1 implements WizardDescriptor.Panel {

    /**
     * The visual component that displays this panel. If you need to access the
     * component from this class, just use getComponent().
     */
    private NewServerVisualPanel1 component;

    // Get the visual component for the panel. In this template, the component
    // is kept separate. This can be more efficient: if the wizard is created
    // but never displayed, or not all panels are displayed, it is better to
    // create only those which really need to be visible.
    public Component getComponent() {
        if (component == null) {
            component = new NewServerVisualPanel1(this);
        }
        return component;
    }

    public HelpCtx getHelp() {
        // Show no Help button for this panel:
        return HelpCtx.DEFAULT_HELP;
        // If you have context help:
        // return new HelpCtx(SampleWizardPanel1.class);
    }

    public boolean isValid() {
        try {
            // If it is always OK to press Next or Finish, then:
            InetAddress.getByName(component.getHostnameTextField().getText());
            int port = Integer.parseInt(component.getPortTextField().getText());
            return port > 0 && port < 65536;
            // If it depends on some condition (form filled out...), then:
            // return someCondition();
            // and when this condition changes (last form field filled in...) then:
            // and uncomment the complicated stuff below.
            // and uncomment the complicated stuff below.
        } catch (UnknownHostException ex) {
            return false;
        } catch (NumberFormatException ex) {
            return false;
        }
    }
    private final Set<ChangeListener> listeners = new HashSet<ChangeListener>(1); // or can use ChangeSupport in NB 6.0

    public final void addChangeListener(ChangeListener l) {
        synchronized (listeners) {
            listeners.add(l);
        }
    }

    public final void removeChangeListener(ChangeListener l) {
        synchronized (listeners) {
            listeners.remove(l);
        }
    }

    protected final void fireChangeEvent() {
        Iterator<ChangeListener> it;
        synchronized (listeners) {
            it = new HashSet<ChangeListener>(listeners).iterator();
        }
        ChangeEvent ev = new ChangeEvent(this);
        while (it.hasNext()) {
            it.next().stateChanged(ev);
        }
    }

    // You can use a settings object to keep track of state. Normally the
    // settings object will be the WizardDescriptor, so you can use
    // WizardDescriptor.getProperty & putProperty to store information entered
    // by the user.
    public void readSettings(Object settings) {
    }

    public void storeSettings(Object settings) {
        WizardDescriptor wd = (WizardDescriptor) settings;
        wd.putProperty("hostname", component.getHostnameTextField().getText());
        wd.putProperty("port", component.getPortTextField().getText());
    }
}
